Ultracompact low-loss coupler between strip and slot waveguides
2009 (English)In: Optics Letters, ISSN 0146-9592, E-ISSN 1539-4794, Vol. 34, no 10, 1498-1500 p.Article in journal (Refereed) Published
We present both theoretical and experimental results of an ultracompact waveguide coupler that is capable of highly efficient coupling of light from strip waveguides to slot waveguides, and vice versa. By optimizing the geometrical parameters, it is possible to achieve extremely low-loss coupling. A coupling efficiency of 97% has been obtained experimentally while keeping the overall size down to the range below 10 mu m. Further analysis shows that the proposed coupler has relatively high tolerance to fabrication errors and is wavelength insensitive. (C) 2009 Optical Society of America
Place, publisher, year, edition, pages
2009. Vol. 34, no 10, 1498-1500 p.
ring resonators, confining light, fibers
IdentifiersURN: urn:nbn:se:kth:diva-13074DOI: 10.1364/OL.34.001498ISI: 000267064500003ScopusID: 2-s2.0-66349112883OAI: oai:DiVA.org:kth-13074DiVA: diva2:328289